Improvement in horseshoes



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Letters Paten: No. 100,328', dated March 1, 1870.

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Wmo- The Schedule referred to in these Letters Patent and making part of the same.

To all whom zt may concern.- Y

Be it known that I, DAVID RoBnRGn, of Mooers Forks, in the .county of Clinton, and State of New York, hare invented and made a new and useful Improvement in Horseshoes; and I do hereby declare the following to be a full, clear, and exact description ofthe said invention, reference being had to the auf nexed drawing making part oft-his specification, where-l m- Figure 1 is an invented plan of the saidliorseshoe; Figure 2 is a longitudinal section of the same; and Figure 3 is an inverted plan of the shoe, with a slight modifica-tion in the position ofthe calks.

Similar marks'of reference denote the same parts. The shoes of vhorseshave heretofore been made either of a uniform, or nearly uniform thickness, or\ else the upper surface of the shoe has been dat.

' In Letters Patent granted to me May 25, 1869, a horseshoe is shown, in which a central hearing is provided for the weight of the horse, and the shoe is so shaped that it may have a rolling motion in any direction, in order that the animals legs may not be strained by the flat shoe standing upon a iiat surface,

and keeping the joints, tendons, andk lnuscles in an uncomfortable position.

My present invention has for its object the relief of horses from the risk of strain or injury, while, un. f

der ordinary circumstances, causing them .to travel with greater ease, preventingr strain,'a.nd rectify-ing any ytendency for the horses hoofs to interfere in cases where that tendency may exist.

My invention consists in a shoe formed with a concave upper surface between the toe and heel portions, and thickest at the heel, so as to raise the back portion of the hoof, give a transverse central bearing of the under side ofthe shoe, and canse the shoe to rock, and the hoof to move easily as the animal steps, the shoe rocking forward, relieving the joints, tendons, and muscles from undue strain and leverage.

In the drawinga represents the shoe, the upper surface ot' which is concave, or bent so that the hoof requires to be pared away toward the front portion, to correspond in shape with the shoe.

The shoe, instead of being of uniform thickness is made considerably thicker at the back than toward the front, as shown in tig. 2.

The side calks 11 are applied either at or near the ent, is-L inner edge of theshoe, as seen in tig. 1, or at or near the outer edge, as in tig. 3.

The heel calks c c may be slightly shorter than the side calksJ), and a toe calk may be used, set near the inner or outer edge, as at d, and this toe calk is not as long as the side ca-lks b b. v

It will nowbe understood 'that the shoe has a central transverse bearing'below the joint of the hoof, and .will rock forward with the motion ofthe animals foot, and tend to make the movement ofthe limbs' Aregular and graceful, and in cases where there is a tendency in the animalsfoot orleg to move incorrectly or to interfere, one of the side calks can `be left off, as illustrated in tig. 3, so that the forward rolling will not be directly in the line of the' horses motion, but slightly diagonally thereto.

By the use of shoes of this kind, the `anrnalsvfoot is set up at the heel, and has an easy position, corresponding to that which it would have if the hoofwas allowed to wear away by use without slices; hence the horse is kept in proper position, there,v being no undue strain ou any ofthe parts. t

' The use of two calks on each side of the shoe increases the extent of wearing surface, and gives the shoe a bet-ter hold upon the pavementor -other surface traveled over.

This shoe is especially adapted to sound horses. It

may, however, be kused with advantage in horses that are weak in the hoof-joints, because the movement is 4much more easy to tlle'anilnal than with the ordinary shoe.

Where the hoof cannot be pared away for the shoe to be bent as much as represented, the calks can be made of a length to give the same bearing surface,

as represented,- and canse the shoe to rock as aforef said.

What I claim, and desire to secure by Letters Pat- The shoe, having a concave or bent upper surface, and made thicker at the heel portion than atthe toe, so as to give a central transverse bearing, and allow the shoe to rock forward withthe movement of the anirnals foot, substantially as specified.

In witness whereof I have hereunto set mysignature this 21st day ofAugust, A. D. `1869.

Witnesses: D. ROBERGE.

GaAs. H. SMITH, HAROLD Snnnnu.. 

